Sheet-metal vessel



(No Model.)

No. 423,887. Patented Mar. 18, 1890.

@Wozwegd UNITED, STATES I PATENT OFFICE.

FRANCIS A. WALSH, OF MILWVAUKEE, WVISOONSIN.

SHEE'T-METAL VESSEL.

SPECIFICATION forming part of Letters Patent No. 423,887, dated March 18, 1890.. Application filed December 19, 1888- Serial No. 294,096. (No model.)

I 0 all whom it may. concern.-

Be it known that I, FRANCIS A. WALSH, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Sheet- Metal Vessels; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to sheet-metal vessels; and it consists in certain peculiarities of construction, as will be fully set forth hereinafter, and pointed out in the claims.

In the drawings, Figure 1 is a central vertical section through the upper part of one form of my present invention. Fig. 2 is a similar vertical section illustrating another form of my said invention.

A is a vessel-body, with a seamless breast B secured thereto in any preferred manner, said breast having a preferably-central circular opening, forming a well, the wall of which preferably extends upward above the plane of the top of the vessel-body and has an inwardly-proj ectin g upper horizontal terminal flange b.

O is a sealingcover, preferably of material softer or thinner than that of which the body and breast of the vessel are formed, said cover being centrally countersunk and depending into the described well or opening, (though preferably above the plane of the top of the vessel-body,) and having aflange embracing and surrounding the said upward-extendin g wall of the opening and horizontal inwardlyprojecting terminal flange of the seamless breast and interlocked therewith, as shown, the purpose of the described central countersink in the cover being for receiving the supporting-chuck (not shown) used while the said cover is being interlocked, as stated.

In Fig. 1 the upward-extending vertical wall of the seamless breast B is first rounded or bent, as at b, and thence rises vertically, terminating in the said inwardly-projecting horizontal flange b, and the flange c of the cover 0 rises a short distance vertically and then turns inward c upward c outward c downward c and again inward c into the bend b of the said upward-extending wall of the breast B, there being preferably a space left between the top of the cover 0 and the inward bend c of its flange for the admission of a wheel or tool (not shown) when such is used in uniting the flanges of the parts B and C. In Fig. 2 the said upward-extending wall a of the seamless breast B rises vertically,

(Without any inward bend b,) terminating, as

before, in the described inwardly-projecting horizontal flange b. The flange c of the cover O in this form follows the same general direction as before, ((3 c c 0 but ends with the described downward turn 0 The breast B strengthens and stiifens the vessel, which is adapted tobe filled through the described Well or central opening in the said breast,'and then the cover 0 may be secured to the flange or wall a of the said breast, which cover, as stated, is preferably of a softer, thinner, or lighter material than that of which the vessel and breast are formed.

A slip-cover may be used, if desired, with either of the forms shown, and may slip over the entire top of the vessel, or only over the cover C and the portion of the breast to which the latter is secured, as preferred.

Although I have shown in the drawings my breast as beinghorizontalbetween its upwardextending wall and the point of union between said breast and the vessel-body, it will be understood that I do not limit myself thereto, as the plane or angles of the breast may be varied as desired.

I am aware that heretofdre covers have been seamed, soldered, crimped, or otherwise secured directly to the upper edges of the top of can-bodies, or to flanges formed thereon, and such I do not claim. The object of my present invention is to secure the flanges of a centrallycountersunk sealing-cover to the inward-projecting horizontal terminal flange of a seamless breast secured to the upper or open end of a vessel-body by the described infolding and interlocking of the flanges of the said breast and cover after the vessel has received its desired contents, which is a very different thing in the art, requiring different tools and another method of procedure, and my present invention is limited to the described construction and arrangement of the said flanges on the said seamless breast and countersunk sealing-cover, as hereinbe'fore shown and described.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a sheet-metal vessel, the combination, with the vessel-body and an independent seamless breast secured to its upper or open end, said breast having a circular opening surrounded by an upwardextending wall terminating in an upper inward projecting horizontal flange, of a sealing-cover having a central countersink above the plane of the top of the vessel-body, and a flange interlocked with and surrounding the said inwardprojecting upper terminal flange of the said breast, substantially as set forth.

2. In a sheet-metal vessel, the combination, with the vessel-body and an independent seamless breast secured to its upper or open end, said breast having a circular opening forming a well, the wall of which rises upwardly above the plane of the breast or top of the vessel-body and has an upper inwardprojecting horizontal terminal flange, of a sealing-cover located above the top of the plane of the vessel body and centrally countersunk, and having a flange. which rises vertically adjacent to the vertical portion of the upward-extending breast-wall, and then extends inward parallel to, but free from contact with, the countersunk portion of the cover, and thence passes around the said horizontal inward-projecting terminal flange of the said breast-wall and downward vertically on the outside of and adjacent to the said vertical portion of the said breast-wall, substantially as set forth.

3. In a sheet-metal vessel, the combination, with the vessel-body and an independent seamless breast secured to its upper or open end,said breast having an opening surrounded by a vertically-extending; wall terminating in an inward-projecting horizontal flange, of a sealing-cover provided with a central countersink, and a flange interlocked with and surrounding the said inward-projecting, terminal flange of the said breast, substantially as set forth.

In testimony that I claim the foregoing l have hereunto set my hand, at Milwaukee,in the county of Milwaukee and State of \Viscousin, in the presence of two witnesses.

FRANCIS A. WALSH. 'Witnesses:

H. G. UNDERWOOD, WM. KLUG. 

